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D330-07 – Standard Test Method Technical Guide
📋 Scope and Referenced Documents
This specification, D330-07 (Reapproved 2021), covers 2-butoxyethanol, also known as ethylene glycol monobutyl ether. It is intended for use in paint and related coatings materials. The standard has been approved by the U.S. Department of Defense. All specified limits are in SI units, and conformance requires rounding off to the nearest unit per Practice E29.
Referenced documents include ASTM standards for testing volatile solvents (D268, D1078, D1209, D1364, D1613, D4052, D5386), practices for significant digits (E29), sampling industrial chemicals (E300), and U.S. Federal Standard PPP-C-2020 for packaging.
📊 Property Specifications
2-Butoxyethanol must comply with the following physical and chemical requirements:
| 🟦 Property | 📏 Requirement | 🎯 Units |
|---|---|---|
| Apparent Specific Gravity (20/20°C) | 0.901 – 0.904 | — |
| Apparent Specific Gravity (25/25°C) | 0.898 – 0.901 | — |
| Color (Pt-Co Scale) | 15 max | — |
| Initial Boiling Point (760 mm Hg) | 168 min | °C |
| Dry Point (760 mm Hg) | 173 max | °C |
| Water Content | 0.1 max | weight % |
| Acidity (as Acetic Acid) | 0.01 max | weight % |
| Acidity (as KOH equivalent) | 0.093 max | mg KOH/g |
Note: Instrumental color determination per Test Method D5386 has shown no statistically significant difference from Test Method D1209, though 2-butoxyethanol may not have been part of the interlaboratory study.
🧬 Sampling and Testing Methods
Sampling shall be conducted in accordance with Practice E300. Testing methods include Test Method D1078 for distillation range, Test Method D1209 or D5386 for color, Test Method D1364 for water content, Test Method D1613 for acidity, and Test Method D4052 for density. All results must be rounded to the nearest unit per Practice E29 for conformance.
💡 For conformance, always round observed or calculated values to the nearest unit in the last right-hand digit of the specification limit, following Practice E29.
⚠️ Consult the supplier’s Material Safety Data Sheet (MSDS) for comprehensive hazard information and safe handling practices for 2-butoxyethanol.
❓ Frequently Asked Questions
🔍 What is the official designation of the standard for 2-butoxyethanol?
The official designation is D330-07 (Reapproved 2021), under the jurisdiction of ASTM Committee D01.35.
💡 What are the key property requirements for 2-butoxyethanol?
Key requirements include apparent specific gravity of 0.901-0.904 (20/20°C), color max of 15 Pt-Co, initial boiling point min 168°C, dry point max 173°C, water max 0.1%, and acidity max 0.01% as acetic acid (0.093 mg KOH/g).
⚡ How should the material be sampled?
Sampling must follow ASTM Practice E300, which provides standard guidelines for sampling industrial chemicals.
📌 Why is rounding important in this standard?
Rounding ensures consistent conformance determination. According to Section 1.2, values must be rounded to the nearest unit in the last right-hand digit of the specification limit, as per Practice E29.